Chironomus alternus Das, Majumdar and Hazra 2016
Male: Total length
Table 2. Lengths (µm) and proportions of leg segments.
|
Fe
|
Ti
|
Ta1
|
Ta2
|
Ta3
|
Ta4
|
Ta5
|
LR
|
BV
|
BR
|
Fore
|
880-920
|
880-940
|
1280-1320
|
680-720
|
560-600
|
480-520
|
200-240
|
1.40-1.45
|
1.53-1.58
|
1.78-1.81
|
Mid
|
1000-1140
|
840-880
|
480-540
|
280-320
|
160-200
|
120-160
|
100-120
|
0.57-0.61
|
3.20-3.52
|
2.14-2.23
|
Hind
|
1160-1200
|
1040-1080
|
720-760
|
360-380
|
280-300
|
120-160
|
120-140
|
0.69-0.70
|
3.10-3.17
|
2.20-2.46
|
About 7 setae on TIX, apparently not in a pale area. Anal point with an expanded end. Inferior Volsella shorter than the anal point and about to the basal third of the gonostylus, which is relatively swollen and narrows slowly over distal third.
Female not known.
Found: Type locality - Kalimpong (27.04°N, 88.28°E 1247 m a.s.l.), West Bengal.
Another species in which the larva has a five-toothed premandible; perhaps some relationship to C. clavipenis.
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